Wheelchair frame



FIG. 1 is a front perspective view of a wheelchair frame showing my newdesign, the broken lines being for illustrative purposes only andforming no part of the claimed design;

FIG. 2 is a left side elevational view thereof, the right sideelevational view being a mirror image of that shown;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof;

The ornamental design for a wheelchair frame, as shown and described.